Universal clamping-fixture for internal-combustion engines



F. DANIELSON. UNIVERSAL CLAMPING FIXTUII E FOR INTERNAL COMBUSTION ENGINES. APPLICATION FILED MAY 31. 19.18.

1,312,617. PanenIedAug 12,1919.

2 SHEETSSHEET I.

F. DANI ELSON.

' UNIVERSAL CLAMPING FIXTURE FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED MAY 3|. 1918- I 3 1 2 ,6 1 7 Patented Aug. 12, 1919.

2QSHEETSSHEET 2.

Ill u UNITED STATES PATENT @FFICE.

FRANK DANIELSON, OF CHICAGO, ILLINOIS.

Application filed May 31, 1918.

To all whom it may concern:

Be it known that I, FRANK DANIELSON,

a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Universal Clamping-Fixtures for Internal-Combustion Engines, of which the following is a specification.

' This invention relates to a clampin fixture for internal combustion engines adapted to securely hold the engine to facilitate assembling and the various operations in connection with repairs and replacement of parts.

The cylinders of internal combustion engines, being peculiarily shaped, are held with difficulty in the various positions to permit access to the parts thereof and numerous forms of clamping devices have been constructed and arranged to hold the cylinders in the particular positions to facilitate different operations thereon. A full complement of such device requires a considerable initial investment and a large amount of space in the shop and frequent handling and transportation olf the cylinders from one device to the other.

It is the object of my invention to produce a clamping fixture of a universal character which will hold the cylinder block in all of the necessary positions to facilitate any of the operations to which the block is subjected.

A further object of my invention is the provision of a universal clamping fixture of relatively simple and inexpensive structure in which the cylinder block may be quickly mounted and dismounted and in which they are rigidly held to facilitate various operations thereon.

A further object of my invention is the provision of a clamping fixture which is ad. ditionally useful for holding certain parts of the transmission and other portions of a motor vehicle assembly.

Further objects and advantages of'my invention will be apparent as it is better understood by reference to the following specification when read in connection with the accompanying drawing, illustrating the pre ferred embodiment thereof, in which Figure 1 is a view in perspective of the fixture; r

Fig. 2 is a longitudinal section through the fixture,-

Specification of Letters Patent.

Patented Au 12, 1919.

Serial No. 237,458.

Fig. 3 is a transverse section through the fixture;

Fig. 1 is a side elevation of a portion of the structure illustrating the cylinder block supported thereon in one position;

Fig. 5 is a detail in section of a portion of the structure;

Fig. 6 is a detail in perspective of a clamping element;

' Fig. 7 is a lfront elevation of the fixture with the cylinder block supported thereon in another position; 1 gig. 8 is an end elevation of the fixture, an

r Fig. 9 is a plan view of the fixture.

Referring to the drawing, 5 indicates a bed preferably of cast metal and provided with 2. depending cylindrical portion 6 which is disposed within a split clamping collar 7 adapted to be mounted on and bolted to a bench. The clamping collar 7 is provided with lugs 8 to receive a screw 9 having a handle 10. Thus the bed 5 may be rotated and locked in any desired position relatively to the collar 7 At its rear edge the bed 5 is provided with two upstanding supports 11 having curved upper edges 12 conforming to the contour of a cylinder so that the cylinder block will rest thereon as indicated in Figs. 2, 3 and 1 of the drawing' Two pairs of spaced lugs 13 near the opposite edge of the bed 5 are adapted to receive the flange on the lower edge of the cylinder block. The flange rests on a support 14 (Fig. 9) between the spaced lugs 13, so that the cylinder block is supported at three points on the bed 5, which insures rigidity of the block when clamped. A clampingelement 15 is supported on an extension 16 of the bed 5 and is adapted to be held in the position indicated in Fig. 3 by a knurled clamping head 17 mounted on a screw 18 the lower edge of which is supported on a pin 19. The pin 19 is longitudinally adjustable in suitable bearings in the extension 16 (Fig. 5) and is normally held in position to engage the screw 18 by a spring 20 disposed between one of the bearings and an abutment 21 on the pin 19. A knurled head 22 on the pin 19 permits withdrawal of the latter sufiiciently to release the screw 16 when it is desired to substitute the clamping element 23 illustrated in Fig. 8 for the clamping element 15. The clamping element 23 is employed in holding the cylinder block, when the latter is disposed in position with its head resting on the bed 5 as shown in Figs. 7 and 8. Lugs 11 on the supports 11 engage shoulders on the cylinder block and assist in holding it rigidly when clamped in this position. lVhen the cylinder block is disposed as indicated in Figs. 7 and 8 it rests upon the lugs 13 and a support Q l'projecting from the bed 5, thus providing a three point support for the block. Lugs 5 prevent longitudinal movement of the cylinder block.

The clamping fixture as hereinbeliore described is particularly adapted for holding the cylinder while assembling, while scraping bearings, and performing various other operations incidental to overhauling the engine. It is also particularly adapted for holding the reverse plate assembly and slow speed assembly of Ford transmission while reaming the same. For this purpose the bed 5 is provided with a central opening 25 and a pin 26 which prevents rotation of the assembly when the drum thereon is disposed in the openin A bushing 27 (Fig. 2) is provided for the opening 25 to hold the smaller drum of the slow speed assembly;

Actual use of the clamping fixture hereinbefore described has demonstrated that it securely holds the cylinder block in any of the necessary positions and that it materially facilitates operations on the cylinder block, thus saving time and labor. It is compact and, therefore, requires little space in the shop and replaces a number of separate clamping devices heretofore in use so that it forms a valuable addition to the equipment of a shop for handling internal combustion engines.

It will be apparent that various changes may be made in the form, construction and arrangement of the parts without departing from the spirit and scope of the claims, or sacrificing any of the material advantages of the invention, the form hereinbefore described bein merely a preferred embodiment thereo I claim:

1. A universal clamping fixture for internal combustion engines comprising a horizontal rotatably mounted bed, projections rigid with the bed and distributed thereon to support an engine cylinder block in a plurality of positions, and a single means cooperative with the block for clamping the same to the fixture in each of said positions.

2. A universal clamping fixture for. internal combustion engines comprising a horizontal rotatably mounted bed, projections on the upper surface of the bed and integral therewith providing a three point support for an engine cylinder block in a plurality of positions, and a single means cooperative with the block for clamping the same to the fixture in each of said positions.

3. A universal clamping fixture for inter nal combustion engines comprising a horn zontal bed, means for rotatably supporting said bed, devices on said supporting means for locking said bed in adjusted position, projections rigid with the bed and distributed thereon to support an engine cylinder .block in a plurality of positions, and a single means cooperative with the block for clamping the same to the fixture in each of said positions. 7

4. A universal clamping fixture for internal combustion engines comprising a bed having a depending cylindrical portion, a split collar to support said bed, means for clamping the collar. to said cylindrical portio-n, projections rigid with the bed and dis-V tributed thereon to support an engine cylinder block in a plurality of positions, and a single means cooperative with the block for clamping the same to the fixture in each of said positions. Y 7

5.A universal clamping fixture for internal combustion engines comprising a bed, means on said bed to support an engine cylinder block in a plurality of positions, a clamping element on said bed, a screw and a clamping head on said screw to hold said clamping element in clamping position, and a pin engaging said screw and normally holding the latter in assembled relationwith said bed, said pin being movable to release said screw.

6. A universal clamping fixture for in ternal combustion engines comprising a bed, means on said bed to support an engine cylinder block in a plurality of positions, a clampingelement on said bed, a screw and a clamping head on said screw to hold said clamping element in clamping position, a pin engaging said screw and a spring normally holding said pin in operative position to lock said screw in assembled relation with said bed;

7. A universal clamping fixture for internal combustion engines comprising a bed, means on said bed providing a three point support ioran engine cylinder block in a plurality of positions, a clamping element, a screw and clamping head thereon to hold said clamping element in clamping position, and means for supporting said screw and permitting separation thereof from said bed. y r

8. A universal clamping fixture for internal combustion engines comprising a bed, upright supports at one side of said bed having curved ends conforming substantially to the contour of the-cylinder. block, spaced lugs at the other side of said bed to receive a fiangeon said block, a support on said bed between said lugs for said block, and means for'clamping said block in said bed. 1

9. A universal clamping fixture for internal. combustion engines comprising a bed l upright supports at one side of said. had

having inwardly directed lugs adapted to engage shoulders on the engine cylinder block, an intermediate support between said first mentioned supports, lugs on the other side of the bed disposed opposite to said first mentioned supports and forming with said intermediate support a three point support for the block, and means for clamping the block on said bed.

10. A universal clamping fixture for internal combustion engines comprising a bed, upright supports at one side of said bed having curved ends and inwardly directed lugs, a support intermediate of said first mentioned supports, two pairs of spaced lugs located at the other side of the bed and disposed opposite to said first mentioned supports, a support intermediate of said pairs of lugs, and means for clamping the cylinder block on said bed.

11. A universal clamping fixture for internal combustion engines comprising a bed, upright supports at one side of said bed, an intermediate support, two pairs of spaced lugs at the other side of the bed and dis posed opposite said first mentioned supports, a support intermediate of said pairs of lugs, and means located opposite to said last mentioned support for clamping the cylinder block on said bed.

12. A universal clamping fixture comprising a clamping collar, a bed provided with a depending cylindrical portion disposed within said collar and a central openin to receive the drum of a change speed assemlfly, and a pin mounted on the bed at one side of said opening to prevent rotation of the assembly relative to the bed.

FRANK DANIELSON.

WVitnesses:

ERNEST H. MERCHANT, M. A. KIDDIE.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, Washington, D. 0. 

